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首页> 外文期刊>RSC Advances >Effect of iron acetylacetonate on the crosslink structure, thermal and flammability properties of novel aromatic diamine-based benzoxazines containing cyano group
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Effect of iron acetylacetonate on the crosslink structure, thermal and flammability properties of novel aromatic diamine-based benzoxazines containing cyano group

机译：乙酰丙酮铁对新型含氰基芳族二胺基苯并恶嗪的交联结构，热学和可燃性的影响

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摘要

Iron acetylacetonate (Fe(AcAc)(3)) was chosen as the catalyst for a novel aromatic diamine-based benzoxazine, containing cyano group (BAPBACP). Its effect on the curing process, thermal and flammability properties of BAPBACP were investigated. The results indicated that without Fe(AcAc)(3), the ring-opening polymerization of the BAPBACP monomer occurred and an arylamine Mannich bridge structure was formed at the low curing temperature stage; and then the cyclotrimerization of the cyano group followed at the high curing temperature stage, but the cyano group was not fully cyclotrimerized even after curing at 350 degrees C for 0.5 h. The addition of 3.5% Fe(AcAc)(3) speeded up the curing reaction and the cyano group was fully cyclotrimerized at 350 degrees C. Thermogravimetric analysis and microscale combustion calorimetry results showed that the poly(BAPBACP) resins possess excellent thermal and flammability properties due to the existence of the arylamine Mannich bridge structure and triazine ring in their crosslinked structure.
机译：选择乙酰丙酮铁（Fe（AcAc）（3））作为新型含氰基（BAPBACP）的芳香族二胺基苯并恶嗪的催化剂。研究了其对BAPBACP固化过程，热性能和可燃性的影响。结果表明，在没有Fe（AcAc）（3）的情况下，BAPBACP单体发生开环聚合，在低固化温度阶段形成芳胺曼尼希桥结构。然后在高固化温度阶段进行氰基的环三聚，但是即使在350℃下固化0.5h后，氰基也不能完全环三聚。添加3.5％Fe（AcAc）（3）加快了固化反应，并且氰基在350摄氏度下完全环三聚。热重分析和微型燃烧量热法结果表明，聚（BAPBACP）树脂具有出色的热和可燃性。由于存在芳胺曼尼希桥结构和三嗪环的交联结构。

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